[mythtv-users] Ananova blocking IPs? SOLVED :)

Tupshin Harper tupshin at tupshin.com
Mon Jul 21 16:18:43 EDT 2003


Andrew Ingram wrote:

>Tupshin (and Shawn),
>
>you guys are briliant!!! How on earth you sussed that one out!!! Just as
>well I kept my boot floppy kernel that came with Debian. I did switch to
>2.4.21 last Friday which explains this. I changed the value in /proc to
>0 and it works :) Could view the website, and mythfilldatabase worked.
>When I was trying other kernels beforehand, I was using ping to test
>them, which doesn't seem to work for anyone, hence me thinking it wasn't
>kernel related.
>
>Anyway, it's working again and I'm very happy. Thank you so much to
>everyone who emailed about this (both on and off list). I really
>appreciate all your help.
>
>Now all I need to do is find out where ECN lives in the kernel
>menuconfig and switch the damn thing off for good!
>
>Thanks,
>Andrew
>
>  
>
You're welcome. It's the kind of thing where you have to have been 
bitten by it yourself in order to readily identify the problem. About a 
year ago, I was bouncing mail to a couple sites, and eventually I 
learned about ECN. Actually, ECN is a good thing, though disabling it is 
justifiable if you never want to diagnose this problem again.

In the kernel config, look in Networking Options->IP: TCP Explicit 
Congestion Notfication. It's also "CONFIG_INET_ECN=y" in your .config, 
so disabling it in either place will help. You could also wrap the 
script that contacts ananova in call to disable and re-enable ecn if you 
wanted to leave it in the kernel.

-Tupshin



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